<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<div id="app">
			<span v-if="isUser">
				<label for="username">用户账号</label>
				<input type="text" id="username" value="" key="username"/>
			</span>
			<span v-else>
				<label for="useremail">用户邮箱</label>
				<input type="text" id="useremail" value="" key="emai"/>
			</span>
			<button @click="isUser = ! isUser">切换类型</button>
		</div>
		
		<script src="js/vue.js" type="text/javascript" charset="utf-8">
		</script>
		
		<script type="text/javascript">
			const app = new Vue({
				el:'#app',
				data:{
					message:'123',
					isUser:true
				}
			
			})
			
		</script>
	</body>
</html>
